Production of high temperature and high strength ceramic mold: gypsum mold has low strength and low temperature, which can not meet large-scale production. The powder produced by this project has a density of less than 1 and a stacking void of more than 60%, which is an ideal material for developing high temperature and high strength ceramic mold. Production of low dielectric insulation ceramics: wollastonite itself good insulation, low dielectric loss, needle crystal, low moisture absorption rate of fired ceramics, for the production of high strength electrical insulation porcelain ideal material.